A Barcode is a visual and machine-readable representation of data. We will briefly describe how to create Barcode signature in C# in this tutorial. We will also walk you through signing the PDF document with Barcode digital signature using C#. The procedure for creating a Barcode signature and signing a PDF document can be found here.

Steps to Sign PDF Document with Barcode signature in C#

1. Install GroupDocs.Signature for .NET package from NuGet.org in the application
2. Add a reference to the necessary namespaces for creating a Barcode signature
3. Create an instance of the Signature class and load the source PDF document
4. Create an object of the BarcodeSignOptions class and define the Barcode signature type and signing options
5. Invoke the Signature class Sign method for signing the PDF document and saving it to the disk

You can rapidly implement the C# Barcode generator feature if you follow the steps outlined above. Barcode signature generation can be achieved with a few API calls and two-three lines of code. Additionally, no third-party software is required to use this guide.

Code to Sign PDF Document with Barcode signature in C#

Following the precise procedures in this article, we have demonstrated how to create Barcode signature in C# in the preceding example. We have created Barcode signatures with the Code128 Barcode type and used it to sign PDF documents. Other Barcode types, such as AustralianPost, Codabar, EAN13, OPC, and others, can be used to sign PDF.

In this article, we looked at how to build a Barcode digital signature in C# and how to use it to sign a PDF document. We recently published an article on how to sign PDF documents with QR code, see How to Sign PDF Document with QR Code in C# for more information.